To solve this question we have to make deduct these 2 years. 2101 minus 1978 will give the answer.
You are 123 years old.
(1476 months are passed.)
From 1978 to 2101 there are 123 years. If you want to learn your age in 2101 (born in 1978) your age is 123.
Let's see what will be your age if you born +1 or -1 from that date.